RecursionError: maximum recursion depth exceeded lark 0.6.0

Hi,

I tried to run my program to parse a text with my grammar (which you can find in issue #175 ) with lark 0.6.0, and I get this error :

  File "/home/venvpypy3/site-packages/lark/visitors.py", line 44, in _transform_tree
    children = list(self._transform_children(tree.children))
  File "/home/venvpypy3/site-packages/lark/visitors.py", line 39, in _transform_children
    yield self._transform_tree(c) if isinstance(c, Tree) else c
  File "/home/venvpypy3/site-packages/lark/visitors.py", line 43, in _transform_tree
    def _transform_tree(self, tree):
RecursionError: maximum recursion depth exceeded

The line 44 and 39 are repeated some hundred of times before this.

The grammar used to work with lark 0.5.6 (as you still can see in issue #175 ).

Any ideas why this is happening ?

[dryslope]

Yes it worked well, thanks.

I’m closing this issue as it’s resolved.

[erezsh]

You’re right, thanks for bringing this to my attention.

I pushed a fix to master. Let me know if it helps.